How does frequency regulation affect energy storage?

When the energy storage system must be charged under the condition of frequency regulation, the charge power absorbed by the energy storage system steadily decreases when the SOC is at a high boundary value, and it eventually cannot absorb the charge power when the SOC hits the critical value.

What is the difference between auxiliary regulation and energy storage system?

The output fluctuation of the thermal power unit is the biggest when the auxiliary regulation is only from the load side, and is relatively small when the frequency change rate is fast. The output of the energy storage system is small while the SOC consumption is small, and the frequency stability is not affected.

Do flexible resources support multi-timescale regulation of power systems?

Here, we focused on this subject while conducting our research. The multi-timescale regulation capability of the power system (peak and frequency regulation, etc.) is supported by flexible resources, whose capacity requirements depend on renewable energy sources and load power uncertainty characteristics.

Can flexible load and energy storage be used to regulate frequency?

The method of using flexible load on the load side and energy storage on the power side to regulate frequency is proposed. The depth limit of energy storage action is proposed, which clarifies the dead zone and the maximum output limit.

Why should energy storage systems adopt integrated regulation strategy?

adopting the integrated regulation strategy will alleviate the regulation pressure of the energy storage system, avoid the high intensity consumption of the energy storage system for a long time, and reduce the life loss of the energy storage system. Cuiping Li: Conceptualization, Methodology, Writing – original draft.

What is the operation status of energy storage system (SoC)?

Among them, the operation status of SOC can be divided into the root mean square value SOCrms of SOC and the operation range SOCmin – SOCmax of SOC, and the benchmark value of SOC is 0.5. The greater the contribution of energy storage system, the greater the role of energy storage system in auxiliary power grid frequency modulation.